prometheus监控springboot程序

1.关于Prometheus
Prometheus是一个根据应用的metrics来进行监控的开源工具。相信很多工程都在使用它来进行监控&＃xff0c;有关详细介绍可以查看官网&＃xff1a;https://prometheus.io/docs/introduction/overview/。

2.有关Grafana
Grafana是一个开源监控利器&＃xff0c;如图所示。

3.SpringBoot使用Prometheus
3.1 依赖内容
在SpringBoot中使用Prometheus其实很简单&＃xff0c;不需要配置太多的东西&＃xff0c;在pom文件中加入依赖&＃xff0c;完整内容如下所示。

<?xml version&＃61;"1.0" encoding&＃61;"UTF-8"?>
<project xmlns&＃61;"http://maven.apache.org/POM/4.0.0" xmlns:xsi&＃61;"http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation&＃61;"http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>2.1.3.RELEASE</version><relativePath/> <!-- lookup parent from repository --></parent><groupId>com.dalaoyang</groupId><artifactId>springboot2_prometheus</artifactId><version>0.0.1-SNAPSHOT</version><name>springboot2_prometheus</name><description>springboot2_prometheus</description><properties><java.version>1.8</java.version></properties><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-actuator</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope></dependency><dependency><groupId>io.micrometer</groupId><artifactId>micrometer-registry-prometheus</artifactId><version>1.1.3</version></dependency></dependencies><build><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId></plugin></plugins></build></project>

3.2 配置文件
配置文件中加入配置&＃xff0c;这里就只进行一些简单配置&＃xff0c;management.metrics.tags.application属性是本文配合Grafana的Dashboard设置的&＃xff0c;如下所示&＃xff1a;

spring.application.name&＃61;springboot_prometheus
management.endpoints.web.exposure.include&＃61;*
management.metrics.tags.application&＃61;${spring.application.name}

3.3 设置application
修改启动类&＃xff0c;如下所示.

&＃64;SpringBootApplication
public class Springboot2PrometheusApplication {public static void main(String[] args) {SpringApplication.run(Springboot2PrometheusApplication.class, args);}&＃64;BeanMeterRegistryCustomizer<MeterRegistry> configurer(&＃64;Value("${spring.application.name}") String applicationName) {return (registry) -> registry.config().commonTags("application", applicationName);}
}

SpringBoot项目到这里就配置完成了&＃xff0c;启动项目&＃xff0c;访问http://localhost:8080/actuator/prometheus&＃xff0c;如图所示&＃xff0c;可以看到一些度量指标。

4.Prometheus配置
4.1 配置应用
在prometheus配置监控我们的SpringBoot应用&＃xff0c;完整配置如下所示。

# my global config
global:scrape_interval: 15s # Set the scrape interval to every 15 seconds. Default is every 1 minute.evaluation_interval: 15s # Evaluate rules every 15 seconds. The default is every 1 minute.# scrape_timeout is set to the global default (10s).# Alertmanager configuration
alerting:alertmanagers:- static_configs:- targets:# - alertmanager:9093# Load rules once and periodically evaluate them according to the global &＃39;evaluation_interval&＃39;.
rule_files:# - "first_rules.yml"# - "second_rules.yml"# A scrape configuration containing exactly one endpoint to scrape:
# Here it&＃39;s Prometheus itself.
scrape_configs:- job_name: &＃39;prometheus&＃39;static_configs:- targets: [&＃39;127.0.0.1:9090&＃39;]
###以下内容为SpringBoot应用配置- job_name: &＃39;springboot_prometheus&＃39;scrape_interval: 5smetrics_path: &＃39;/actuator/prometheus&＃39;static_configs:- targets: [&＃39;127.0.0.1:8080&＃39;]

4.2 启动Prometheus
启动Prometheus&＃xff0c;浏览器访问&＃xff0c;查看Prometheus页面&＃xff0c;如图所示。

点击如图所示位置&＃xff0c;可以查看Prometheus监控的应用。

列表中UP的页面为存活的实例&＃xff0c;如图所示

也可以查看很多指数&＃xff0c;如下所示。

5.Grafana配置
启动Grafana&＃xff0c;配置Prometheus数据源&＃xff0c;这里以ID是4701的Doshboard为例&＃xff08;地址&＃xff1a;https://grafana.com/dashboards/4701&＃xff09;如图。

在Grafana内点击如图所示import按钮

在如图所示位置填写4701&＃xff0c;然后点击load。

接下来导入Doshboard。

导入后就可以看到我们的SpringBoot项目对应的指标图表了&＃xff0c;如图。